A 1.00-km length of power line carries a total charge of 264 mC distributed uniformly over its length. Find the magnitude of the electric field 54.3 cm from the axis of the power line, and not near either end (staying away from the ends means you can approximate the field as that of an infinitely long wire).

Identify the correct relation showing that the radius r of the orbit of a moon of a given planet can be determined from the radius r of the planet, the acceleration of gravity at the surface of the planet, and the time τ required by the moon to complete one full revolution about the planet. determine the acceleration of gravity at the surface of the planet jupiter knowing that r = 71 492 km and that t= 3.551 days and r= 670.9 × 10^3 km for its moon europa.